Piscines Magiline

Glossary A

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Swimming Pools

Discover on this page all the technical terms regarding the world of the swimming pools.

Asynchronous motor

Motor consisting of a stator (see “stator”) supplied with alternating current and a rotor (see “rotor”).


Unit of measurement of electric current. Symbol A.

Alkalinity measurement

See TAC or “Total Alkali Concentration”.


A chemical agent that destroys algae.


Microscopic water plants whose development is accelerated by sunlight and the presence of lime particles.

Active chlorine

Portion of the free chlorine immediately active on organic matter.


State of a medium whose pH is under 7, typified by at excess of H+ cations (see “cations”). Opposite state to “alkalinity”.


State of a medium whose pH is above 7, typified by an excess of anions OH- (see “anions”). State opposite to “acidity”.

Active oxygen

See “hydrogen peroxide”.